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Takenaka S, Sato T, Kazui S, Yasui Y, Saiin K, Naito S, Takahashi Y, Mizuguchi Y, Tada A, Kobayashi Y, Omote K, Konishi T, Kamiya K, Ooka T, Nagai T, Wakasa S, Anzai T. Clinical Utility of Near-Infrared Spectroscopy Intravascular Ultrasound in the Assessment of Rapidly Progressive Cardiac Allograft Vasculopathy. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Sato T, Takenaka S, Kazui S, Yasui Y, Saiin K, Naito S, Takahashi Y, Mizuguchi Y, Tada A, Kobayashi Y, Omote K, Konishi T, Kamiya K, Ooka T, Nagai T, Wakasa S, Anzai T. Clinical Implications of Hemodynamic Assessment in Small Body Surface Area Patients with Left Ventricular Assist Device. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Horie M, Watanabe M, Tada A, Sato K. [Analysis of Free Pantothenic Acid in Foods by HPLC and LC-MS/MS]. Shokuhin Eiseigaku Zasshi 2023; 64:47-52. [PMID: 36858591 DOI: 10.3358/shokueishi.64.47] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
A simple and reliable analytical method has been developed for the determination of pantothenic acid in food. For the high-protein food, 20 mL of water was added to 2 g of sample, and after homogenization extraction, 1 mL of 15% zinc sulfate solution was added, mixed well, centrifuged, and the supernatant was filtered to make the test solution. For the low-protein food, 20 mL of 1% formic acid solution was added to 2 g of sample, homogenized, extracted, centrifuged, and the supernatant was filtered to make the test solution. The HPLC separation was carried out on a L-column2 ODS column with 0.02 mol/L phosphate solution (pH 3.0)- acetonitrile (95 : 5) as the mobile phase, and detected at 200 nm. The LC-MS/MS conditions were L-column2 ODS as the separation column, 5 mmol/L ammonium formate (containing 0.01% formic acid)-methanol (85 : 15) as the mobile phase, and multiple reaction monitoring (MRM) was used for detection. The recoveries of pantothenic acid in milk powder and nutritional food products were more than 88% with high precision. As a result of analyzing commetrcially available foods labeled as containing pantothenic acid, analytical values almost identical to the labeled values were obtained, and a high correlation was observed between the values obtained by HPLC and LC-MS/MS.
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Affiliation(s)
- Masakazu Horie
- Department of Food Science, Faculty of Home Economics, Otsuma Women's University
| | - Moe Watanabe
- Department of Food Science, Faculty of Home Economics, Otsuma Women's University
| | - Atsuko Tada
- Division of Food Additives, National Institute of Health Sciences
| | - Kyoko Sato
- Division of Food Additives, National Institute of Health Sciences
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Terami S, Kubota H, Koganesawa N, Murakoshi S, Satou M, Sekine Y, Watanabe S, Tsuruoka N, Sugiki M, Tahara S, Yasunaga M, Kamimoto K, Nakashima A, Ihara S, Takeshita T, Kawahara R, Takamine T, Koja A, Ebisu N, Yanagimoto T, Tatebe C, Tada A, Sato K. Estimation of daily intake of food additives by Japanese young children using the market basket method in 2018. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2023; 40:328-345. [PMID: 36669121 DOI: 10.1080/19440049.2023.2167002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
To estimate the daily intake of food additives by young children aged 1-6 years in Japan, an intake survey was conducted in 2018 using the market basket method for food additives, including twelve types of colourants, three kinds of preservatives, three kinds of sweeteners and two kinds of food manufacturing agents. A list of the daily consumption of processed foods was prepared based on a special survey (MHLW 2011) and used for the estimation. The results of the survey showed that the food additives with the highest daily intake were phosphorus compounds (phosphoric acid and its salts; 11.2 mg/kg bw/day, expressed as phosphorus), followed by propylene glycol (0.80 mg/kg bw/day). The daily intake of other food additives ranged from 0 to 0.20 mg/kg bw/day. The estimated daily intake of each food additives by young children was compared with the acceptable daily intake (ADI) or maximum tolerable daily intake (MTDI). The highest ratio of the estimated daily intake to ADI was 3.2% for propylene glycol, whereas the ratios of the estimated daily intake to ADI for colourants, preservatives and sweeteners ranged from 0 to 1.1% (benzoic acid). The ratio of the estimated daily intake to MTDI for phosphorus compounds was 16%.
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Affiliation(s)
- Shoko Terami
- Division of Food Additives, National Institute of Health Sciences, Tokyo, Japan
| | - Hiroki Kubota
- Division of Food Additives, National Institute of Health Sciences, Tokyo, Japan
| | | | | | - Mutsumi Satou
- Sendai City Institute of Public Health, Sendai, Japan
| | - Yuriko Sekine
- Sendai City Institute of Public Health, Sendai, Japan
| | | | | | - Mikio Sugiki
- Tokyo Metropolitan Institute of Public Health, Tokyo, Japan
| | - Shoichi Tahara
- Tokyo Metropolitan Institute of Public Health, Tokyo, Japan
| | - Megumi Yasunaga
- Kagawa Prefectural Research Institute for Environmental Sciences and Public Health, Kagawa, Japan
| | - Kana Kamimoto
- Kagawa Prefectural Research Institute for Environmental Sciences and Public Health, Kagawa, Japan
| | - Akie Nakashima
- Hiroshima Prefectural Technology Research Institute, Public Health and Environment Center, Hiroshima, Japan
| | - Sayaka Ihara
- Hiroshima Prefectural Technology Research Institute, Public Health and Environment Center, Hiroshima, Japan
| | - Tomoaki Takeshita
- Nagasaki Municipal Public Health and Environment Laboratory, Nagasaki, Japan
| | - Rumiko Kawahara
- Nagasaki Municipal Public Health and Environment Laboratory, Nagasaki, Japan
| | - Tomonori Takamine
- Okinawa Prefectural Institute of Health and Environment, Okinawa, Japan
| | - Ayuko Koja
- Okinawa Prefectural Institute of Health and Environment, Okinawa, Japan
| | - Noriaki Ebisu
- Okinawa Prefectural Institute of Health and Environment, Okinawa, Japan
| | - Tokiko Yanagimoto
- Division of Food Additives, National Institute of Health Sciences, Tokyo, Japan
| | - Chiye Tatebe
- Division of Food Additives, National Institute of Health Sciences, Tokyo, Japan
| | - Atsuko Tada
- Division of Food Additives, National Institute of Health Sciences, Tokyo, Japan
| | - Kyoko Sato
- Division of Food Additives, National Institute of Health Sciences, Tokyo, Japan
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Hirose S, Watanabe M, Tada A, Sugimoto N, Sato K, Hara-Kudo Y. [Suitability of Culture Broth and Conditions for Escherichia coli Growth and Gas Production as a Test for Food Additives in EC Broth]. Shokuhin Eiseigaku Zasshi 2023; 64:69-77. [PMID: 37211388 DOI: 10.3358/shokueishi.64.69] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The growth and gas production test for Escherichia coli in the microbiological examination of food additives is stipulated in the ninth edition of Japan's Specifications and Standards for Food Additives (JSFA) and described as a part of the "Confirmation Test for Escherichia coli" in "Microbial Limit Tests" in the same manuscript. The growth and gas production test for E. coli indicated that the positive or negative of "gas production and/or turbidity" in EC broth should be confirmed after incubating at 45.5±0.2℃ for 24±2 h. If both gas production and turbidity are negative, the culture is additionally incubated up to 48±2 h to determine E. coli contamination. The internationally referenced Bacteriological Analytical Manual of the U.S. FDA had revised the incubation temperature in tests for coliforms and E. coli from 45.5±0.2℃ to 44.5±0.2℃ in 2017. Therefore, we conducted research in anticipation of this temperature change being reflected in the microbiological examination of the JSFA. We used seven EC broth products and six food additives across eight products that are available in Japan in order to compare the growth and gas production at temperatures of 45.5±0.2℃ and 44.5±0.2℃ of E. coli NBRC 3972, which is designated as the test strain in JSFA. Both with/without food additives, the number of EC broth products in which medium turbidity and gas production by the strain were positive in three out of three tubes at all test times was greater at 44.5±0.2℃ than at 45.5±0.2℃. These results suggest that the growth and gas production test for E. coli could be more appropriately conducted by incubation at 44.5±0.2℃ in the "Confirmation Test for Escherichia coli" for E. coli in the JSFA in comparison to 45.5±0.2℃. Furthermore, there were differences in the growth and gas production of E. coli NBRC 3972 depending on the EC broth product used. Therefore, the importance of "Media growth promotion test" and "Method suitability test" in the ninth edition of the JSFA should be emphasized.
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Affiliation(s)
- Shouhei Hirose
- Division of Microbiology, National Institute of Health Sciences
| | - Maiko Watanabe
- Division of Microbiology, National Institute of Health Sciences
| | - Atsuko Tada
- Division of Food Additives, National Institute of Health Sciences
| | - Naoki Sugimoto
- Division of Food Additives, National Institute of Health Sciences
| | - Kyoko Sato
- Division of Food Additives, National Institute of Health Sciences
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Sato K, Terami S, Sasaki T, Sakurai H, Shimoyama A, Sekido H, Tahara S, Hara T, Ito T, Yamamoto S, Yoshida M, Watanabe T, Tatebe C, Kubota H, Tada A. [Validation of Method for Nitrite Determination in Foods]. Shokuhin Eiseigaku Zasshi 2023; 64:240-245. [PMID: 38171896 DOI: 10.3358/shokueishi.64.240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
In general, nitrite in food is extracted under slightly alkaline conditions, deproteinized, and analyzed by a colorimetric method using color development by diazotization. However, depending on the sample, the sample solution may become cloudy and difficult to filter by the deproteinization treatment of the analytical method. Recently, an improved analytical method that solves these problems has been reported. Therefore, a validation study was performed on the improved analytical method was performed. The concentrations of sodium nitrite added to cod roe, fish sausage, and ham, which were not labeled with sodium nitrite, were set at the upper limits of the standards for use. We set the target values of 70-120% for trueness, less than 15% for intralaboratory reproducibility, and less than intralaboratory reproducibility for repeatability. As a result, the target values were met for the three samples verified: 88-92% for trueness, 2.0-3.0% for repeatability, and 3.2-4.3% for intralaboratory reproducibility. In addition, an interlaboratory study was conducted by eight institutes on the improved analytical method for nitrite. At each institution, sodium nitrite was added to the same three samples as in the validation study, at concentrations equivalent to twice the lower limit of quantification and the upper limit of the standards for use and analyzed in triplicate. The estimated trueness from the obtained analyses ranged from 82 to 95%, the repeatability ranged from 2.3 to 5.8%, and the inter-room reproducibility ranged from 3.5 to 11%. Thus, the improved analytical method could be useful for determining nitrite in foods.
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Affiliation(s)
| | | | | | | | | | | | | | - Takahiko Hara
- Japan Inspection Association of Food and Food Industry Environment
| | - Takudo Ito
- Japan Inspection Association of Food and Food Industry Environment
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Takenaka S, Sato T, Nagai T, Omote K, Kamiya K, Konishi T, Kobayashi Y, Tada A, Mizuguchi Y, Takahashi Y, Naito S, Saiin K, Ishizaka S, Wakasa S, Anzai T. Impact of right ventricular reserve on exercise capacity and quality of life in patients with left ventricular assist device. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
Right heart failure following left ventricular assist device (LVAD) implantation is a major complication which significantly impairs functional capacity and quality of life (QoL). Right ventricular (RV) reserve function may limit exercise capacity and QoL in LVAD patients; however, most patients show normal RV haemodynamics at rest.
Purpose
The aim of this study was to investigate whether RV reserve assessed by the changes of RV function during exercise is correlated with exercise capacity and QoL in patients with LVAD.
Methods
We prospectively examined 20 consecutive LVAD patients who were admitted to our university hospital between June 2020 and November 2021 after excluding those who were unable to perform exercise (n=8). All patients underwent invasive exercise right heart catheterisation with simultaneous echocardiography in the supine position. RV stroke work index (RVSWI) was calculated as 0.0136 × stroke volume index × (mean pulmonary artery pressure [mPAP] − right atrial pressure [RAP]) at rest and during exercise. Exercise capacity and QoL were assessed by 6-minute walk distance (6MWD) and peak oxygen consumption (VO2) in cardiopulmonary exercise testing, and the EuroQol visual analogue scale (EQ-VAS), respectively. The patients were divided into two groups according to the median ΔRVSWI (RVSWI change from rest to peak exercise) of 1.45 (interquartile range [IQR] −0.31 to 8.25) g/m2.
Results
Patients were predominantly male (75%) and the median age was 47 (IQR 38–60) years. Patients with lower ΔRVSWI had significantly higher change on RAP (P=0.019), but significantly lower change on mPAP (P<0.001) compared to those with higher ΔRVSWI. There were no significant differences in age, gender, primary aetiology of heart failure, type of LVAD devices, or echocardiographic parameters including tricuspid annular plane systolic excursion, and RVSWI at rest between the groups. ΔRVSWI during exercise were positively correlated with 6MWD (R=0.69, P<0.01) and peak VO2 (R=0.66, P<0.01) (Figure A). In addition, ΔRVSWI during exercise were positively correlated with the EQ-VAS (R=0.48, P=0.031). On the other hand, there was no significant correlation between RVSWI at rest and 6MWD (R=−0.11, P=0.63) and peak VO2 (R=0.13, P=0.95), and the EQ-VAS (R=0.11, P=0.61). During a median follow-up period of 312 (IQR 176–369) days, adverse events occurred in 3 patients (15%), including 1 death and 2 hospitalisations for major bleeding and right heart failure. Kaplan-Meier analysis revealed that the adverse events more frequently occurred in patients with lower ΔRVSWI compared to those with higher ΔRVSWI (Figure B).
Conclusions
ΔRVSWI was positively correlated with 6MWD, peak VO2 and EQ-VAS irrespective of RV function at rest. Our findings suggest that the assessment of RV reserve function using ΔRVSWI would be useful for risk stratification in patients with LVAD.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- S Takenaka
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - T Sato
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - T Nagai
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - K Omote
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - K Kamiya
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - T Konishi
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - Y Kobayashi
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - A Tada
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - Y Mizuguchi
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - Y Takahashi
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - S Naito
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - K Saiin
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - S Ishizaka
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - S Wakasa
- Hokkaido University, Cardiovascular and Thoracic Surgery, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - T Anzai
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
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Tada A, Nagai T, Omote K, Tsujinaga S, Kamiya K, Konishi T, Sato T, Komoriyama H, Kobayashi Y, Takenaka S, Mizuguchi Y, Yamamoto K, Yoshikawa T, Saito Y, Anzai T. Validation of the HFA-PEFF and the H2FPEF scores for the diagnosis of heart failure with preserved ejection fraction in Japanese patients:a report from the Japanese multicentre registry. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The standard diagnosis of heart failure (HF) with preserved ejection fraction (HFpEF) is based on the following: 1) symptoms of HF, 2) preserved left ventricular (LV) ejection fraction (LVEF, >50%), and 3) presence of LV diastolic dysfunction confirmed by echocardiography or cardiac catheterisation. However, there are limits to the diagnostic accuracy of individual parameters, and what cut-off values should be applied and how they should be combined remain unclear. Diagnostic algorithms for HFpEF such as the HFA-PEFF algorithm and the H2FPEF score have been proposed; however, previous validation studies were conducted in stable chronic HF and did not include an invasive haemodynamic assessment. Thus, the diagnostic accuracy for HFpEF lacked robustness. Moreover, information on their applicability in the Asian population is limited.
Purpose
The aim of this study was to investigate these scores' diagnostic validity for HFpEF in Japanese patients recently hospitalised due to acute decompensated HF.
Methods
We examined patients with HFpEF recently hospitalised with acute decompensated HF whose HFA-PEFF and H2FPEF scores could be calculated at discharge from a nationwide HFpEF-specific multicentre registry (HFpEF group) and control patients who underwent echocardiography to investigate the cause of dyspnoea in our hospital (Non-HFpEF group). We calculated the HFA-PEFF and the H2FPEF scores among the studied population. Receiver operating characteristic (ROC) curves and area under the curve (AUC) were computed to compare the diagnostic accuracy of these scores.
Results
The studied population included 372 consecutive patients (194 HFpEF group and 178 Non-HFpEF group; HFpEF prevalence, 52%). The HFA-PEFF score classified 155 (42%) of all patients into the high likelihood category (5–6 points) and only 19 (5%) into the low likelihood category (0–1 point). A high HFA-PEFF score could diagnose HFpEF with a high specificity of 84% and a positive predictive value (PPV) of 82%, and a low HFA-PEFF score could rule out HFpEF with a high sensitivity of 99% and a negative predictive value (NPV) of 89%. The H2FPEF score classified 86 (23%) of all patients into the high likelihood category (6–9 points) and 84 (23%) into the low likelihood category (0–1 point). HFpEF could be diagnosed with a high H2FPEF score (specificity, 97%; PPV, 94%) or ruled out with a low H2FPEF score (sensitivity, 97%; NPV, 93%). The diagnostic accuracy for the HFA-PEFF and H2FPEF scores was 0.82 (95% confidence interval [CI] 0.78–0.86) and 0.89 (95% CI 0.86–0.93), respectively, by the AUC of the ROC curve (P=0.004) (Figure 1A). In the HFA-PEFF sub-scores, the functional score showed little diagnostic value, while the morphological and biomarker scores showed moderate diagnostic value (Figure 1B).
Conclusions
The H2FPEF score may be more useful than the HFA-PEFF score in diagnosing HFpEF in Japanese patients.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): a Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS KAKENHI) Figure 1
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Affiliation(s)
- A Tada
- Hokkaido University, Sapporo, Japan
| | - T Nagai
- Hokkaido University, Sapporo, Japan
| | - K Omote
- Hokkaido University, Sapporo, Japan
| | | | - K Kamiya
- Hokkaido University, Sapporo, Japan
| | | | - T Sato
- Hokkaido University, Sapporo, Japan
| | | | | | | | | | | | | | - Y Saito
- Nara Medical University, Nara, Japan
| | - T Anzai
- Hokkaido University, Sapporo, Japan
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9
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Takenaka S, Kobayashi Y, Nagai T, Kato Y, Komoriyama H, Nagano N, Kamiya K, Konishi T, Sato T, Omote K, Tada A, Iwano H, Kusano K, Ishibashi-Ueda H, Anzai T. Applicability of the AHA/ACC/HRS guideline for implantable cardioverter defibrillator implantation in Japanese patients with cardiac sarcoidosis. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Sarcoidosis is a systemic granulomatous disease that affects multiple organs. Cardiac involvement is a key determinant of poor clinical outcomes in the patients with sarcoidosis, as it causes congestive heart failure, conduction abnormalities, ventricular tachycardia and fibrillation (VT/VF), and sudden cardiac death (SCD). Although implantable cardioverter defibrillators (ICDs) are used to prevent SCD from VT/VF in patients with cardiac sarcoidosis (CS), the generalizability of the AHA/ACC/HRS guidelines for the Japanese CS patients remains unclear.
Purpose
We aimed to assess, among Japanese patients with CS, the ICD recommendations from the 2017 AHA/ACC/HRS Guidelines for Management of Patients with Ventricular Arrhythmias and the Prevention of Sudden Cardiac Death.
Methods
We examined 188 consecutive patients with CS in two tertiary hospitals between 1979 and 2020. The primary outcome was defined as a composite outcome involving SCD or ventricular arrhythmic events. Ventricular arrhythmic events were defined as either emergency treatment for VF or sustained VT, which included appropriate ICD therapy.
Results
During a median follow-up period of 5.68 (IQR: 4.87–6.70) years, the primary outcome occurred in 44 patients (23%), which included 6 cases of SCD and 38 cases of VT/VF. ICD implant was indicated based on left ventricular ejection fraction (LVEF) of ≤35% (class I recommendation) in 62 patients, with an annualized event rate of 3.93%. A LVEF of >35% with a need for a permanent pacemaker (class IIa recommendation) was observed for 53 patients, with an annualized event rate of 2.54%. A LVEF of >35% with late gadolinium enhancement (LGE) during cardiovascular magnetic resonance (class IIa recommendation) was observed for 62 patients, with an annualized event rate of 2.38% (Figure A). Kaplan-Meier analyses revealed that patients with a class I recommendation for ICD implantation had a significant higher incidence of the primary outcome, compared to patients with a class IIa recommendation and patients with no indication for ICD implantation (P=0.03). However, there were no significant differences in the incidence of the primary outcome between patients with a LVEF of >35% and a need for a permanent pacemaker and patients with a class I recommendation (P=0.08) or patients with a LVEF of ≤35% (P=0.31). Moreover, there was no significant difference in the incidence of the primary outcome between patients with a LVEF of >35% and LGE on cardiovascular magnetic resonance and patients with a class I recommendation (P=0.054) or patients with a LVEF of ≤35% (P=0.22) (Figure B).
Conclusions
The American guideline recommendations for ICD implantation might be applicable to Japanese patients with CS. Implantation of an ICD may need to be considered in these patients if they require a permanent pacemaker or have LGE, regardless of LVEF.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Japan Society for the Promotion of Science
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Affiliation(s)
| | | | - T Nagai
- Hokkaido University, Sapporo, Japan
| | - Y Kato
- Hokkaido University, Sapporo, Japan
| | | | - N Nagano
- Sapporo Medical University Hospital, Sapporo, Japan
| | - K Kamiya
- Hokkaido University, Sapporo, Japan
| | | | - T Sato
- Hokkaido University, Sapporo, Japan
| | - K Omote
- Hokkaido University, Sapporo, Japan
| | - A Tada
- Hokkaido University, Sapporo, Japan
| | - H Iwano
- Hokkaido University, Sapporo, Japan
| | - K Kusano
- National Cerebral and Cardiovascular Center Hospital, Osaka, Japan
| | - H Ishibashi-Ueda
- National Cerebral and Cardiovascular Center Hospital, Osaka, Japan
| | - T Anzai
- Hokkaido University, Sapporo, Japan
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10
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Maruyama R, Kajiwara A, Tada A. 676 Relationship between the physical properties of skin with pigmented spots and amount of desmoglein 1 in the stratum corneum. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Suzuki I, Kumai Y, Tada A, Sato K, Umegaki K, Chiba T, Takebayashi J. [Method Verification for Vitamin D Analysis in Processed Foods Based on the Analytical Manual for the Standard Tables of Food Composition in Japan 2015 (Seventh Revised Edition)]. Shokuhin Eiseigaku Zasshi 2020; 61:53-57. [PMID: 32336709 DOI: 10.3358/shokueishi.61.53] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Considerable amounts of processed foods contain vitamin D (ergocalciferol (D2) and cholecalciferol (D3)) as food additives. For field surveys on food additives, the analytical method for vitamin D should be well-validated. However, the current official method in Japan cannot separately determine the concentrations of D2 and D3, whereas the method for the Standard Tables of Food Composition in Japan 2015 (STFC method) can. Therefore, in this study, we verified the applicability of the STFC method to processed foods. During the course of this research, we added some improvements to the original method. Spike and recovery experiments using vegetable juice, soymilk, and corn flakes as food matrices showed that the recovery rates (relative standard deviation) of D2 and D3 were 103-112% (4.7-12.6%) and 102-109% (2.4-21.8%), respectively, at the estimated method limit of quantification (EMLOQ) level; and 100-110% (4.0-7.4%) and 102-105% (3.8-4.8%), respectively, at 10 times the EMLOQ level. These results indicated that accuracy and precision of the modified STFC method were enough to determine dietary D2 and D3 as endogenous nutrients and/or food additives, and suggested that this method is appropriate for analyzing vitamin D concentrations in processed foods.
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Affiliation(s)
- Ippei Suzuki
- National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition
| | - Yasuhito Kumai
- National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition
| | | | | | - Keizo Umegaki
- National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition.,Department of Food Safety and Management, Showa Women's University
| | - Tsuyoshi Chiba
- National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition
| | - Jun Takebayashi
- National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition
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Goto H, Tada A, Ibe A, Kitajima Y. 一项使用两种方法检查称为网状编织图案上层皮肤层的研究. Br J Dermatol 2020. [DOI: 10.1111/bjd.18773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Goto H, Tada A, Ibe A, Kitajima Y. A study using two methods to examine a skin layer called the upper basket‐weave pattern layer. Br J Dermatol 2020. [DOI: 10.1111/bjd.18758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Goto H, Tada A, Ibe A, Kitajima Y. Basket-weave structure in the stratum corneum is an important factor for maintaining the physiological properties of human skin as studied using reconstructed human epidermis and tape stripping of human cheek skin. Br J Dermatol 2019; 182:364-372. [PMID: 31077338 DOI: 10.1111/bjd.18123] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/08/2019] [Indexed: 11/26/2022]
Abstract
BACKGROUND The normal stratum corneum (SC) has an upper basket-weave (BW) pattern layer and a lower compact layer. The transition from compact to BW SC is well associated with a transition from diffuse to peripheral distributions of corneodesmosomes (CDs). The loss of transition from compact SC to BW SC appears to cause structural and barrier-function impairments. OBJECTIVES To show the involvement of the BW SC in maintaining the physiological properties of the skin. METHODS Reconstructed human epidermis (RHE) with a complete BW structure was created by treatment with prepared emulsion-A, an oil-in-water emulsion. The RHE tissues were subjected to histological analysis, and the distribution of CDs on the SC with or without BW SC was analysed by anti-desmoglein (Dsg)1 antibody immunofluorescence and ultrastructural and Western blotting analyses. Ultrastructural analysis of intercellular lipids was performed. The mechanical properties of the RHE were evaluated. RESULTS Emulsion-A successfully generated the BW SC in the RHE in which the degradation of CDs was promoted. The intercellular space of the BW SC generated by emulsion-A was filled with multilamellar lipid sheets. The softness of the SC with a BW structure formed with emulsion-A was higher than that of the compact SC in RHE. The outermost SC Dsg1 degradation (formation of the BW SC as determined with Dsg1 pixels) was correlated with water-barrier functions and the SC softness of healthy human cheek, which varied widely. CONCLUSIONS Emulsion-A successfully generated the BW SC in RHE for the first time. This method is suggested to be a useful tool for investigating the physiological significance of the BW SC in vitro. Determination of Dsg1 content in the SC obtained by tape stripping from human skin allows study of the effects of external stimulants, such as creams and ointments, including cosmetics, on the completeness of the BW SC in situ without biopsy. What's already known about this topic? The normal stratum corneum (SC) has two layers, an upper basket-weave (BW) pattern layer and a lower compact layer. Epidermal diseases such as ichthyosis vulgaris and X-linked ichthyosis have an incomplete or no BW SC and impaired SC barrier functions, in which corneodesmosome (CD) degradation in a peripheral distribution is impaired. The roles of the BW SC in the physiological properties of human skin have not been clearly elucidated. What does this study add? Reconstructed human epidermis (RHE) with a complete BW structure was generated for the first time by treatment with oil-in-water emulsion-A. The formation of the BW SC was associated with a decrease in Dsg1 content, which represents the CD number in the SC. The intercellular space of the BW SC generated by emulsion-A, but not compact SC, was filled with multilamellar lipid sheets. The softness of the SC with a BW structure formed by emulsion-A treatment was higher than that of the compact SC in RHE. What is the translational message? RHE with a complete BW SC generated by emulsion-A treatment is suggested to be a useful tool for investigating effects on the physiological functions of the BW SC, as in treatments with creams and ointments including cosmetics. Determination of desmoglein 1 content in the SC obtained by tape stripping from human skin can make it possible to study the effects of external stimulants, such as creams and ointments, including cosmetics, on the completeness of the BW SC in situ without biopsy.
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Affiliation(s)
- H Goto
- Product Development Department, POLA Chemical Industries, Inc., 560 Kashio-cho, Totsuka-ku, Yokohama, 244-0812, Japan
| | - A Tada
- Product Development Department, POLA Chemical Industries, Inc., 560 Kashio-cho, Totsuka-ku, Yokohama, 244-0812, Japan
| | - A Ibe
- Frontier Research Center, POLA Chemical Industries, Inc., 560 Kashio-cho, Totsuka-ku, Yokohama, 244-0812, Japan
| | - Y Kitajima
- Department of Dermatology, Kizawa Memorial Hospital, 590 Shimokobi, Kobi, Minokamo, Gifu, 505-8503, Japan
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Yamaji F, Kajiwara A, Tada A. 423 The intercellular adhesion of human dermal lymphatic microvascular endothelial cells is decreased by cortisol and increased by peach kernel extract. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Nishizaki Y, Masumoto N, Nakajima K, Ishizuki K, Yamazaki T, Kuroe M, Numata M, Ihara T, Tada A, Sugimoto N, Sato K. Relative molar sensitivities of carnosol and carnosic acid with respect to diphenylamine allow accurate quantification of antioxidants in rosemary extract. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2019; 36:203-211. [PMID: 30668225 DOI: 10.1080/19440049.2018.1556817] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We have been developing a high-performance liquid chromatography/photodiode array (HPLC/PDA) employing relative molar sensitivities (RMSs) and adopted it to the accurate quantification of carnosol (CL) and carnosic acid (CA) which are the antioxidants in rosemary extract. The method requires no references of CL or CA and instead uses RMSs with respect to diphenylamine (DPA) whose certified reference material is available from a reagent manufacturer. The molar and response ratios of the analytes to the reference in an artificial mixture of them were determined using 1H-quantitative nuclear magnetic resonance spectroscopy (1H-qNMR) and HPLC/PDA at a wavelength of 284 nm under isocratic condition, respectively, and then RMSs were calculated to be 0.111 for CL/DPA and 0.0809 for CA/DPA as averaged values in three HPLC-PDA instruments. The RMS values varied by up to 1.1% as relative standard deviation. To evaluate the performance of HPLC/PDA with the RMSs, the CL and CA contents in rosemary extracts were determined using DPA as a reference. The CL and CA contents were compared with those determined using calibration curves of CL and CA obtained by HPLC measurement of standard solutions prepared from their reagents whose absolute purities were determined using 1H-qNMR. The differences between the two methods for CL and CA were ≤3% as relative error. This chromatographic method with RMSs allows a simple and reliable quantification when reference of the analyte is unavailable.
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Affiliation(s)
- Yuzo Nishizaki
- a Division of Food Additives , National Institute of Health Sciences , Kawasaki-ku , Japan
| | - Naoko Masumoto
- a Division of Food Additives , National Institute of Health Sciences , Kawasaki-ku , Japan
| | - Kaori Nakajima
- a Division of Food Additives , National Institute of Health Sciences , Kawasaki-ku , Japan
| | - Kyoko Ishizuki
- a Division of Food Additives , National Institute of Health Sciences , Kawasaki-ku , Japan
| | - Taichi Yamazaki
- b National Metrology Institute of Japan , National Institute of Advanced Industrial Science and Technology , Tsukuba , Japan
| | - Miho Kuroe
- b National Metrology Institute of Japan , National Institute of Advanced Industrial Science and Technology , Tsukuba , Japan
| | - Masahiko Numata
- b National Metrology Institute of Japan , National Institute of Advanced Industrial Science and Technology , Tsukuba , Japan
| | - Toshihide Ihara
- b National Metrology Institute of Japan , National Institute of Advanced Industrial Science and Technology , Tsukuba , Japan
| | - Atsuko Tada
- a Division of Food Additives , National Institute of Health Sciences , Kawasaki-ku , Japan
| | - Naoki Sugimoto
- a Division of Food Additives , National Institute of Health Sciences , Kawasaki-ku , Japan
| | - Kyoko Sato
- a Division of Food Additives , National Institute of Health Sciences , Kawasaki-ku , Japan
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17
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Tatebe C, Ohtsuki T, Fujita T, Nishiyama K, Itoh S, Sugimoto N, Kubota H, Tada A, Sato K, Akiyama H. Determination of starting materials, intermediates, and subsidiary colors in the color additive Food Red No. 106 (Sulforhodamine B) using high-performance liquid chromatography. Food Chem 2017; 237:733-742. [DOI: 10.1016/j.foodchem.2017.05.084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 05/13/2017] [Accepted: 05/16/2017] [Indexed: 11/26/2022]
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18
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Yoshimura M, Ochi K, Sekiya H, Tamai E, Maki J, Tada A, Sugimoto N, Akiyama H, Amakura Y. Identification of Characteristic Phenolic Constituents in Mousouchiku Extract Used as Food Additives. Chem Pharm Bull (Tokyo) 2017; 65:878-882. [DOI: 10.1248/cpb.c17-00401] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Morio Yoshimura
- Department of Pharmacognosy, College of Pharmaceutical Sciences, Matsuyama University
| | - Keisuke Ochi
- Department of Pharmacognosy, College of Pharmaceutical Sciences, Matsuyama University
| | - Hiroshi Sekiya
- Department of Infectious Disease, College of Pharmaceutical Sciences, Matsuyama University
| | - Eiji Tamai
- Department of Infectious Disease, College of Pharmaceutical Sciences, Matsuyama University
| | - Jun Maki
- Department of Infectious Disease, College of Pharmaceutical Sciences, Matsuyama University
| | | | | | | | - Yoshiaki Amakura
- Department of Pharmacognosy, College of Pharmaceutical Sciences, Matsuyama University
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19
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Akiyama H, Nose M, Ohtsuki N, Hisaka S, Takiguchi H, Tada A, Sugimoto N, Fuchino H, Inui T, Kawano N, Hayashi S, Hishida A, Kudo T, Sugiyama K, Abe Y, Mutsuga M, Kawahara N, Yoshimatsu K. Evaluation of the safety and efficacy of Glycyrrhiza uralensis root extracts produced using artificial hydroponic and artificial hydroponic-field hybrid cultivation systems. J Nat Med 2016; 71:265-271. [PMID: 27848205 DOI: 10.1007/s11418-016-1058-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 10/24/2016] [Indexed: 11/25/2022]
Abstract
Glycyrrhiza uralensis roots used in this study were produced using novel cultivation systems, including artificial hydroponics and artificial hydroponic-field hybrid cultivation. The equivalency between G. uralensis root extracts produced by hydroponics and/or hybrid cultivation and a commercial Glycyrrhiza crude drug were evaluated for both safety and efficacy, and there were no significant differences in terms of mutagenicity on the Ames tests. The levels of cadmium and mercury in both hydroponic roots and crude drugs were less than the limit of quantitation. Arsenic levels were lower in all hydroponic roots than in the crude drug, whereas mean lead levels in the crude drug were not significantly different from those in the hydroponically cultivated G. uralensis roots. Both hydroponic and hybrid-cultivated root extracts showed antiallergic activities against contact hypersensitivity that were similar to those of the crude drug extracts. These study results suggest that hydroponic and hybrid-cultivated roots are equivalent in safety and efficacy to those of commercial crude drugs. Further studies are necessary before the roots are applicable as replacements for the currently available commercial crude drugs produced from wild plant resources.
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Affiliation(s)
- H Akiyama
- National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo, 158-8501, Japan.
| | - M Nose
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku, Nagoya, 468-8503, Japan
| | - N Ohtsuki
- National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo, 158-8501, Japan
| | - S Hisaka
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku, Nagoya, 468-8503, Japan
| | - H Takiguchi
- National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo, 158-8501, Japan
| | - A Tada
- National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo, 158-8501, Japan
| | - N Sugimoto
- National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo, 158-8501, Japan
| | - H Fuchino
- Tsukuba Division, Research Center for Medicinal Plant Resources, National Institutes of Biomedical Innovation, Health and Nutrition, 1-2 Hachimandai, Tsukuba, Ibaraki, 303-0843, Japan
| | - T Inui
- Tsukuba Division, Research Center for Medicinal Plant Resources, National Institutes of Biomedical Innovation, Health and Nutrition, 1-2 Hachimandai, Tsukuba, Ibaraki, 303-0843, Japan
| | - N Kawano
- Tsukuba Division, Research Center for Medicinal Plant Resources, National Institutes of Biomedical Innovation, Health and Nutrition, 1-2 Hachimandai, Tsukuba, Ibaraki, 303-0843, Japan
| | - S Hayashi
- Hokkaido Division, Research Center for Medicinal Plant Resources, National Institutes of Biomedical Innovation, Health and Nutrition, 108-4 Aza Ohashi, Nayoro, Hokkaido, 096-0065, Japan
| | - A Hishida
- Hokkaido Division, Research Center for Medicinal Plant Resources, National Institutes of Biomedical Innovation, Health and Nutrition, 108-4 Aza Ohashi, Nayoro, Hokkaido, 096-0065, Japan
| | - T Kudo
- Kajima Technical Research Institute, Kajima Corporation, 19-1, Tobitakyu 2-chome, Chofushi, Tokyo, 182-0036, Japan
| | - K Sugiyama
- National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo, 158-8501, Japan
| | - Y Abe
- National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo, 158-8501, Japan
| | - M Mutsuga
- National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo, 158-8501, Japan
| | - N Kawahara
- Tsukuba Division, Research Center for Medicinal Plant Resources, National Institutes of Biomedical Innovation, Health and Nutrition, 1-2 Hachimandai, Tsukuba, Ibaraki, 303-0843, Japan
| | - K Yoshimatsu
- Tsukuba Division, Research Center for Medicinal Plant Resources, National Institutes of Biomedical Innovation, Health and Nutrition, 1-2 Hachimandai, Tsukuba, Ibaraki, 303-0843, Japan
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20
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Nishizaki Y, Tada A, Ishizuki K, Ito Y, Onoda A, Sugimoto N, Akiyama H. [Development of a Novel Method for Quantifying Quassin and Neoquassin in Jamaica Quassia Extracts Using the Molar Absorption Coefficient Ratio]. Shokuhin Eiseigaku Zasshi 2016; 56:185-93. [PMID: 26537647 DOI: 10.3358/shokueishi.56.185] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A novel HPLC-based method employing molar absorption coefficient ratios to 4-hydroxybenzoic acid (4HBA) was developed for the determination of quassin and neoquassin in Jamaica quassia extract, which is used as a food additive in Japan. Based on comparisons of quantitative NMR (qNMR) spectra and HPLC chromatograms of an artificial mixture of quassin, neoquassin, and 4HBA, the molar absorption coefficient ratios of quassin and neoquassin to 4HBA were determined as 0.84 and 0.85, respectively. Quassin and neoquassin were quantified in food additives by qNMR and HPLC based on molar absorption coefficient ratios using 1,4-bis(trimethylsilyl)benzene-d4 and 4HBA as internal standards, respectively. The differences in quantitation values between qNMR and HPLC analyses were below 1.2%. Our proposed novel HPLC-based quantitation method employing the molar absorption coefficient ratios is a reliable tool for determining levels of quassin and neoquassin in food additives and processed foods.
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21
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Suzuki I, Kubota H, Ohtsuki T, Tatebe C, Tada A, Yano T, Akiyama H, Sato K. An IC-MS/MS Method for the Determination of 1-Hydroxyethylidene-1,1-diphosphonic Acid on Uncooked Foods Treated with Peracetic Acid–Based Sanitizers. Chem Pharm Bull (Tokyo) 2016; 64:1713-1719. [DOI: 10.1248/cpb.c16-00555] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | | | | | | | | | - Hiroshi Akiyama
- National Institute of Health Sciences
- Graduate School of Pharmaceutical Sciences, Osaka University
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22
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Amakura Y, Yoshimura M, Morimoto S, Yoshida T, Tada A, Ito Y, Yamazaki T, Sugimoto N, Akiyama H. Chromatographic Evaluation and Characterization of Components of Gentian Root Extract Used as Food Additives. Chem Pharm Bull (Tokyo) 2016; 64:78-82. [DOI: 10.1248/cpb.c15-00776] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | - Sara Morimoto
- College of Pharmaceutical Sciences, Matsuyama University
| | | | | | - Yusai Ito
- Faculty of Home Economics, Kyoritsu Women’s University
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23
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Tada A, Tanaka T, Takamoto A, Yanai H, Sato S, Kanazawa S. Ectopic thyroid tissue in the adrenal gland: CT and MRI findings. Diagn Interv Imaging 2015; 97:373-5. [PMID: 26493761 DOI: 10.1016/j.diii.2015.06.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 05/27/2015] [Accepted: 06/01/2015] [Indexed: 12/13/2022]
Affiliation(s)
- A Tada
- Department of Radiology, Okayama University Medical School, 2-5-1 Kitaku-Shikatacho, Okayama 700-0914, Japan.
| | - T Tanaka
- Department of Radiology, Okayama University Medical School, 2-5-1 Kitaku-Shikatacho, Okayama 700-0914, Japan.
| | - A Takamoto
- Department of Urology, Okayama University Medical School, Okayama, Japan.
| | - H Yanai
- Department of Pathology, Okayama University Medical School, Okayama, Japan.
| | - S Sato
- Department of Radiology, Okayama University Medical School, 2-5-1 Kitaku-Shikatacho, Okayama 700-0914, Japan.
| | - S Kanazawa
- Department of Radiology, Okayama University Medical School, 2-5-1 Kitaku-Shikatacho, Okayama 700-0914, Japan.
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Shimamura T, Sumikura Y, Yamazaki T, Tada A, Kashiwagi T, Ishikawa H, Matsui T, Sugimoto N, Akiyama H, Ukeda H. Applicability of the DPPH assay for evaluating the antioxidant capacity of food additives - inter-laboratory evaluation study -. ANAL SCI 2015; 30:717-21. [PMID: 25007929 DOI: 10.2116/analsci.30.717] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
An inter-laboratory evaluation study was conducted in order to evaluate the antioxidant capacity of food additives by using a 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. Four antioxidants used as existing food additives (i.e., tea extract, grape seed extract, enju extract, and d-α-tocopherol) and 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (Trolox) were used as analytical samples, and 14 laboratories participated in this study. The repeatability relative standard deviation (RSD(r)) of the IC50 of Trolox, four antioxidants, and the Trolox equivalent antioxidant capacity (TEAC) were 1.8-2.2%, 2.2-2.9%, and 2.1-2.5%, respectively. Thus, the proposed DPPH assay showed good performance within the same laboratory. The reproducibility relative standard deviation (RSD(R)) of IC50 of Trolox, four antioxidants, and TEAC were 4.0-7.9%, 6.0-11%, and 3.7-9.3%, respectively. The RSD(R)/RSD(r) values of TEAC were lower than, or nearly equal to, those of IC50 of the four antioxidants, suggesting that the use of TEAC was effective for reducing the variance among the laboratories. These results showed that the proposed DPPH assay could be used as a standard method to evaluate the antioxidant capacity of food additives.
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Akiyama T, Yamazaki T, Tada A, Ito Y, Otsuki N, Akiyama H. Classification of microbial α-amylases for food manufacturing using proteinase digestion. Food Sci Nutr 2014; 2:571-7. [PMID: 25473515 PMCID: PMC4237487 DOI: 10.1002/fsn3.133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 05/02/2014] [Accepted: 05/04/2014] [Indexed: 12/02/2022] Open
Abstract
Enzymes produced by microorganisms and plants are used as food additives to aid the processing of foods. Identification of the origin of these enzyme products is important for their proper use. Proteinase digestion of α-amylase products, followed by high performance liquid chromatography (HPLC) analysis, was applied to α-amylase from the mold Aspergillus species, the bacteria Bacillus species, and the actinomycetes Saccharomonospora species. Eighteen commercial products of α-amylase were digested with trypsin and endoproteinase Lys-C and HPLC analyzed. For some proteinase/sample combinations, the area of the intact α-amylase peak decreased and new peaks were detected after digestion. The presence and retention times of the novel peaks were used to group the products. The results from this method, called the proteinase digestion–HPLC method, allowed the classification of the α-amylase products into 10 groups, whereas the results from sodium dodecyl sulfate polyacrylamide gel electrophoresis allowed their classification into seven groups.
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Affiliation(s)
| | | | - Atsuko Tada
- National Institute of Health Sciences Tokyo, Japan
| | - Yusai Ito
- National Institute of Health Sciences Tokyo, Japan ; Kyoritsu Women's University Tokyo, Japan
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Tada A, Ishizuki K, Yamazaki T, Sugimoto N, Akiyama H. Method for the determination of natural ester-type gum bases used as food additives via direct analysis of their constituent wax esters using high-temperature GC/MS. Food Sci Nutr 2014; 2:417-25. [PMID: 25473499 PMCID: PMC4221840 DOI: 10.1002/fsn3.117] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Revised: 04/02/2014] [Accepted: 04/06/2014] [Indexed: 11/06/2022] Open
Abstract
Natural ester-type gum bases, which are used worldwide as food additives, mainly consist of wax esters composed of long-chain fatty acids and long-chain fatty alcohols. There are many varieties of ester-type gum bases, and thus a useful method for their discrimination is needed in order to establish official specifications and manage their quality control. Herein is reported a rapid and simple method for the analysis of different ester-type gum bases used as food additives by high-temperature gas chromatography/mass spectrometry (GC/MS). With this method, the constituent wax esters in ester-type gum bases can be detected without hydrolysis and derivatization. The method was applied to the determination of 10 types of gum bases, including beeswax, carnauba wax, lanolin, and jojoba wax, and it was demonstrated that the gum bases derived from identical origins have specific and characteristic total ion chromatogram (TIC) patterns and ester compositions. Food additive gum bases were thus distinguished from one another based on their TIC patterns and then more clearly discriminated using simultaneous monitoring of the fragment ions corresponding to the fatty acid moieties of the individual molecular species of the wax esters. This direct high-temperature GC/MS method was shown to be very useful for the rapid and simple discrimination of varieties of ester-type gum bases used as food additives.
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Affiliation(s)
- Atsuko Tada
- National Institute of Health Sciences Tokyo, Japan
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27
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Inoue K, Tanada C, Nishikawa H, Matsuda S, Tada A, Ito Y, Min JZ, Todoroki K, Sugimoto N, Toyo'oka T, Akiyama H. Evaluation of gardenia yellow using crocetin from alkaline hydrolysis based on ultra high performance liquid chromatography and high-speed countercurrent chromatography. J Sep Sci 2014; 37:3619-24. [DOI: 10.1002/jssc.201400793] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 09/18/2014] [Accepted: 09/29/2014] [Indexed: 12/11/2022]
Affiliation(s)
- Koichi Inoue
- Laboratory of Analytical and Bio-Analytical Chemistry; School of Pharmaceutical Sciences; University of Shizuoka; Shizuoka Japan
| | - Chihiro Tanada
- Laboratory of Analytical and Bio-Analytical Chemistry; School of Pharmaceutical Sciences; University of Shizuoka; Shizuoka Japan
| | - Hiroaki Nishikawa
- Laboratory of Analytical and Bio-Analytical Chemistry; School of Pharmaceutical Sciences; University of Shizuoka; Shizuoka Japan
| | | | - Atsuko Tada
- National Institute of Health Sciences; Tokyo Japan
| | - Yusai Ito
- National Institute of Health Sciences; Tokyo Japan
- Department of Food Science and Nutrition; Faculty of Home Economics; Kyoritsu Women's University; Tokyo Japan
| | - Jun Zhe Min
- Laboratory of Analytical and Bio-Analytical Chemistry; School of Pharmaceutical Sciences; University of Shizuoka; Shizuoka Japan
| | - Kenichiro Todoroki
- Laboratory of Analytical and Bio-Analytical Chemistry; School of Pharmaceutical Sciences; University of Shizuoka; Shizuoka Japan
| | - Naoki Sugimoto
- Laboratory of Analytical and Bio-Analytical Chemistry; School of Pharmaceutical Sciences; University of Shizuoka; Shizuoka Japan
| | - Toshimasa Toyo'oka
- Laboratory of Analytical and Bio-Analytical Chemistry; School of Pharmaceutical Sciences; University of Shizuoka; Shizuoka Japan
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Tada A, Watanabe M, Senpuku H. Factors influencing compliance with infection control practice in Japanese dentists. Int J Occup Environ Med 2014; 5:24-31. [PMID: 24463798 PMCID: PMC7767590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 10/27/2013] [Indexed: 10/26/2022]
Abstract
BACKGROUND In recent years, dentists have more opportunity of treating patients infected with blood-borne pathogens. Although compliance with infection control practice (ICP) in dental practice is required, it is not still sufficiently spread in Japan. OBJECTIVE To identify factors associated with compliance with ICPs in the population of Japanese dentists. METHODS In a questionnaire-based cross-sectional study in 2009, 2134 dentists in Aichi prefecture, Japan, were surveyed. They were asked for their demographic characteristics, willingness to treat HIV/AIDS patients, and knowledge about universal/standard precautions and ICP. RESULTS Many ICP items had significant association with age, specialty for oral surgery, number of patients treated per day, willingness to treat HIV/AIDS patients and knowledge about the universal/standard precautions. In logistic regression model, knowledge about the precautions had significant associations with all ICP items. Among participants with disadvantageous characteristic group for ICP (ie, age ≥50 years, being general dentist, and treating ≤35 patients/day), knowledge about the universal/standard precautions had greater impact on exchanging handpiece for each patient and installing extra-oral vacuum in those with age of ≥50 years than in those who visited ≤35 patient per day. CONCLUSION Knowledge about the meaning of universal/standard precautions is the most significant predictor of compliance with ICPs among Japanese dentists.
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Affiliation(s)
- A Tada
- Department of Health Science, Hyogo University, 2301 Shinzaike, Hiraokacho, Kakogawa, Hyogo 675-0195, Japan.
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Tada A, Ishizuki K, Iwamura J, Mikami H, Hirao Y, Fujita I, Yamazaki T, Akiyama H, Kawamura Y. Improvement of the Assay Method for Steviol Glycosides in the JECFA Specifications. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/ajac.2013.44024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Tada A, Takahashi K, Ishizuki K, Sugimoto N, Suematsu T, Arifuku K, Tahara M, Akiyama T, Ito Y, Yamazaki T, Akiyama H, Kawamura Y. Absolute quantitation of stevioside and rebaudioside A in commercial standards by quantitative NMR. Chem Pharm Bull (Tokyo) 2012; 61:33-8. [PMID: 23124594 DOI: 10.1248/cpb.c12-00736] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The extract prepared from the leaves of Stevia rebaudiana BERTONI (Asteraceae) contains sweet steviol glycosides, mainly stevioside and rebaudioside A. Highly purified stevia extracts have become popular worldwide as a natural, low-calorie sweetener. They contain various types of steviol glycosides, and their main components are stevioside and rebaudioside A. The content of each steviol glycoside is quantified by comparing the ratios of the molecular weights and the chromatographic peak areas of the samples to those of stevioside or rebaudioside A standards of the Food and Agriculture Organization of the United Nations (FAO)/World Health Organization (WHO) Joint Expert Committee on Food Additives (JECFA) and other specifications. However, various commercial standard reagents of stevioside and rebaudioside A are available. Their purities are different and their exact purities are not indicated. Therefore, the measured values of stevioside and rebaudioside A contained in a sample vary according to the standard used for the quantification. In this study, we utilized an accurate method, quantitative NMR (qNMR), for determining the contents of stevioside and rebaudioside A in standards, with traceability to the International System of Units (SI units). The purities of several commercial standards were determined to confirm their actual values.
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Affiliation(s)
- Atsuko Tada
- National Institute of Health Sciences, 1-18-1 Kamiyoga, Tokyo 158-8501, Japan.
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Saito T, Fujiuchi S, Tao Y, Sasaki Y, Ogawa K, Suzuki K, Tada A, Kuba M, Kato T, Kawabata M, Kurashima A, Sakatani M. Efficacy and safety of voriconazole in the treatment of chronic pulmonary aspergillosis: experience in Japan. Infection 2012; 40:661-7. [PMID: 22956473 DOI: 10.1007/s15010-012-0322-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2011] [Accepted: 08/17/2012] [Indexed: 02/06/2023]
Abstract
BACKGROUND Though various clinical conditions of aspergillosis can occur, depending essentially on the host's immunological status, the focus of research in North American and European countries has mainly been on invasive pulmonary aspergillosis in immunocompromised patients. There are, however, also many problems to overcome in chronic forms of aspergillosis. One of those problems is that there are no codified treatment guidelines for chronic pulmonary aspergillosis (CPA). Especially in Japan, this issue is more serious, because there are more cases with CPA due to the many aged people with past history of tuberculosis. Several clinical cases and case series have reported the usefulness of the various antifungal agents that are available. The new triazole, voriconazole, in particular, seems to be effective in the treatment of CPA. The aim of the present study is to evaluate the efficacy and safety of voriconazole in the treatment of CPA in non-immunocompromised patients. PATIENTS AND METHODS We conducted a prospective, open-label, non-comparative, multicenter study over a 2-year period. For inclusion in the study, patients with confirmed or probable CPA were recruited in 11 hospitals of the National Hospital Organization in Japan. Clinical, radiological, serological, and mycological data were collected at baseline and 12 weeks after treatment or at the end of treatment. RESULTS Among 77 patients enrolled in the study, 71 patients (mean age 65.9 years, 56 males and 15 females) were eligible for the study. All of the eligible patients presented with underlying lung diseases, including sequelae of tuberculosis (n = 35), non-tuberculous mycobacterial lung disease (n = 8), chronic obstructive pulmonary disease (COPD) (n = 8), interstitial pneumonia (n = 7), cystic lung disease (n = 4), pneumothorax (n = 3), bronchial cancer (n = 1), and others (n = 5). Voriconazole was indicated in 48 cases (68 %) as the first-line treatment for CPA and 23 patients previously received other antifungal therapies. Based on a composite of clinical, radiologic, serological, and mycologic criteria, good response was seen in 43 patients (60.6 %), no response was observed in 19 patients (26.8 %), and 4 cases (5.6 %) got worse. Five patients (7.0 %) were unassessable for efficacy. The common adverse events were visual disturbances (17 patients, 23.9 %), abnormal liver function test results (12 patients, 16.9 %), adverse psychological effects (3 patients, 4.2 %), and others (10 patients, 14.0 %). Treatment with voriconazole had to be stopped in 2 cases (2.8 %) because of serious adverse events (abnormal liver function test results). There was no association between adverse effects and trough voriconazole levels in serum. CONCLUSIONS In Japan, voriconazole provides effective therapy of CPA in non-immunocompromised patients with an acceptable level of toxicity.
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Affiliation(s)
- T Saito
- Ibaraki Higashi National Hospital, Ibaraki, Japan.
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Tohda H, Sasaki M, Tada A, Hara F, Idiris A, Kumagai H. Schizosaccharomyces pombe minimum genome factory. J Biotechnol 2010. [DOI: 10.1016/j.jbiotec.2010.09.826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Tada A, Takahashi K, Sugimoto N, Suematsu T, Arifuku K, Saito T, Ihara T, Yoshida Y, Ishizuki K, Nishimura T, Yamazaki T, Kawamura Y. Absolute Quantitation of Quercetin and the Glycosides in Natural Food Additives by Quantitative NMR. J Food Hyg Soc Jpn 2010; 51:205-12. [DOI: 10.3358/shokueishi.51.205] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Atsuko Tada
- National Institute of Health Sciences, 1-8-1 Kamiyoga, Setagaya-ku, Tokyo, Japan
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Nishigaki R, Watanabe T, Kajimoto T, Tada A, Takamura-Enya T, Enomoto S, Nukaya H, Terao Y, Muroyama A, Ozeki M, Node M, Hasei T, Totsuka Y, Wakabayashi K. Isolation and Identification of a Novel Aromatic Amine Mutagen Produced by the Maillard Reaction. Chem Res Toxicol 2009; 22:1588-93. [DOI: 10.1021/tx900119j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Rena Nishigaki
- Cancer Prevention Basic Research Project, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, Tokyo 104-0045, Japan, Department of Public Health and Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University, 1 Shichono-cho, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan, and Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Tetsushi Watanabe
- Cancer Prevention Basic Research Project, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, Tokyo 104-0045, Japan, Department of Public Health and Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University, 1 Shichono-cho, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan, and Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Tetsuya Kajimoto
- Cancer Prevention Basic Research Project, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, Tokyo 104-0045, Japan, Department of Public Health and Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University, 1 Shichono-cho, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan, and Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Atsuko Tada
- Cancer Prevention Basic Research Project, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, Tokyo 104-0045, Japan, Department of Public Health and Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University, 1 Shichono-cho, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan, and Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Takeji Takamura-Enya
- Cancer Prevention Basic Research Project, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, Tokyo 104-0045, Japan, Department of Public Health and Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University, 1 Shichono-cho, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan, and Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Shigeki Enomoto
- Cancer Prevention Basic Research Project, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, Tokyo 104-0045, Japan, Department of Public Health and Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University, 1 Shichono-cho, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan, and Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Haruo Nukaya
- Cancer Prevention Basic Research Project, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, Tokyo 104-0045, Japan, Department of Public Health and Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University, 1 Shichono-cho, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan, and Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Yoshiyasu Terao
- Cancer Prevention Basic Research Project, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, Tokyo 104-0045, Japan, Department of Public Health and Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University, 1 Shichono-cho, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan, and Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Atsushi Muroyama
- Cancer Prevention Basic Research Project, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, Tokyo 104-0045, Japan, Department of Public Health and Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University, 1 Shichono-cho, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan, and Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Minoru Ozeki
- Cancer Prevention Basic Research Project, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, Tokyo 104-0045, Japan, Department of Public Health and Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University, 1 Shichono-cho, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan, and Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Manabu Node
- Cancer Prevention Basic Research Project, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, Tokyo 104-0045, Japan, Department of Public Health and Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University, 1 Shichono-cho, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan, and Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Tomohiro Hasei
- Cancer Prevention Basic Research Project, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, Tokyo 104-0045, Japan, Department of Public Health and Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University, 1 Shichono-cho, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan, and Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Yukari Totsuka
- Cancer Prevention Basic Research Project, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, Tokyo 104-0045, Japan, Department of Public Health and Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University, 1 Shichono-cho, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan, and Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Keiji Wakabayashi
- Cancer Prevention Basic Research Project, National Cancer Center Research Institute, 1-1 Tsukiji 5-chome, Chuo-ku, Tokyo 104-0045, Japan, Department of Public Health and Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University, 1 Shichono-cho, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan, and Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, 52-1, Yada, Suruga-ku, Shizuoka 422-8526, Japan
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Uchida A, Shibayama T, Takahashi S, Hamada N, Kawata N, Tada A, Soda R, Takahashi K. 537 POSTER Detection of EGFR mutation in the sample of pleural effusion is contributive as a determinant of EGFR-TKI-therapy for the patients with lung cancer. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)72471-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Sugimoto N, Tada A, Kuroyanagi M, Yoneda Y, Yun YS, Kunugi A, Sato K, Yamazaki T, Tanamoto KI. [Survey of synthetic disinfectants in grapefruit seed extract and its compounded products]. Shokuhin Eiseigaku Zasshi 2008; 49:56-62. [PMID: 18344660 DOI: 10.3358/shokueishi.49.56] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Grapefruit seed extract (GSE), derived from the seeds of grapefruit (Citrus paradisi MCAF.), is listed as a natural food additive in Japan. Products containing GSE are used as disinfectants made from only natural sources, especially after Japanese researchers found that GSE prevents the growth of norovirus. On the other hand, recent overseas studies indicated that synthetic disinfectants, such as benzalkonium and benzethonium chlorides, were present in some commercial GSE products. To confirm the quality of commercial GSE products available in Japanese markets, we carried out comprehensive research to identify the major constituents of commercial GSE products which are used as food additives (13 products from 6 manufacturers), dietary supplements (5 products from 4 manufacturers), cosmetic materials (16 products from 10 manufacturers) and disinfectant or deodorant sprays (7 products from 7 manufacturers). By means of NMR and LC/MS analysis, synthetic disinfectants such as benzethonium or benzalkonium salts were detected in most of the commercial GSE products.
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Kubota K, Nagai K, Nishiwaki Y, Sugiura T, Tsuchiya S, Matsui K, Tada A, Nishimura Y, Kawahara M. Attitudes about chemotherapy for Japanese patients with or without cancer: Doctors, nurses, and the general public. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.17062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
17062 Background: A prospective survey in England demonstrated that patients with cancer were much more likely to accept radical treatment with minimal chance of benefit than people who did not have cancer (Slevin et al. Br Med J 1990; 300: 1458–60). We compared responses of Japanese patients with cancer with those of a control group of physicians, nurses, and patients without cancer in assessing personal cost-benefit of chemotherapy using the same questionnaire with Slevin's study. Methods: Subjects were asked with questionnaires whether of not to accept intensive and mild chemotherapy with a supposed minimum chance of effectiveness. 153 patients with cancer, 265 controls, 213 doctors, 397 nurses, and 51 patients without cancer were subjects of the study. Results: Percentage of subjects who accepted intensive chemotherapy with a supposed minimum chance of effectiveness (1% chance of cure, 3-month prolonging life, 1% relief of symptoms) by subject group were as follows: cancer patients; 62/55/52, doctors; 27/32/4, nurses; 11/12/5, non-cancer patients; 35/40/36, controls; 23/24/15, respectively. Conclusions: More patients with cancer than people without cancer accepted treatments giving the minimal benefit for cure, prolonging life or palliation of symptoms. Interestingly, the results in Japanese survey were similar to the previous study in England. No significant financial relationships to disclose.
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Affiliation(s)
- K. Kubota
- National Cancer Center Hospital East, Kashiwa, Japan; Aichi Cancer Center, Nagoya, Japan; Nishigunma National Hospital, Shibukawa, Japan; Osaka Prefectural Medical Center, Habikino, Japan; Minami-Okayama Medical Center, Okayama, Japan; Ibaragi-Higashi Hospital, Ibaragi, Japan; Kinki- Chuo Chest Medical Center, Sakai, Japan
| | - K. Nagai
- National Cancer Center Hospital East, Kashiwa, Japan; Aichi Cancer Center, Nagoya, Japan; Nishigunma National Hospital, Shibukawa, Japan; Osaka Prefectural Medical Center, Habikino, Japan; Minami-Okayama Medical Center, Okayama, Japan; Ibaragi-Higashi Hospital, Ibaragi, Japan; Kinki- Chuo Chest Medical Center, Sakai, Japan
| | - Y. Nishiwaki
- National Cancer Center Hospital East, Kashiwa, Japan; Aichi Cancer Center, Nagoya, Japan; Nishigunma National Hospital, Shibukawa, Japan; Osaka Prefectural Medical Center, Habikino, Japan; Minami-Okayama Medical Center, Okayama, Japan; Ibaragi-Higashi Hospital, Ibaragi, Japan; Kinki- Chuo Chest Medical Center, Sakai, Japan
| | - T. Sugiura
- National Cancer Center Hospital East, Kashiwa, Japan; Aichi Cancer Center, Nagoya, Japan; Nishigunma National Hospital, Shibukawa, Japan; Osaka Prefectural Medical Center, Habikino, Japan; Minami-Okayama Medical Center, Okayama, Japan; Ibaragi-Higashi Hospital, Ibaragi, Japan; Kinki- Chuo Chest Medical Center, Sakai, Japan
| | - S. Tsuchiya
- National Cancer Center Hospital East, Kashiwa, Japan; Aichi Cancer Center, Nagoya, Japan; Nishigunma National Hospital, Shibukawa, Japan; Osaka Prefectural Medical Center, Habikino, Japan; Minami-Okayama Medical Center, Okayama, Japan; Ibaragi-Higashi Hospital, Ibaragi, Japan; Kinki- Chuo Chest Medical Center, Sakai, Japan
| | - K. Matsui
- National Cancer Center Hospital East, Kashiwa, Japan; Aichi Cancer Center, Nagoya, Japan; Nishigunma National Hospital, Shibukawa, Japan; Osaka Prefectural Medical Center, Habikino, Japan; Minami-Okayama Medical Center, Okayama, Japan; Ibaragi-Higashi Hospital, Ibaragi, Japan; Kinki- Chuo Chest Medical Center, Sakai, Japan
| | - A. Tada
- National Cancer Center Hospital East, Kashiwa, Japan; Aichi Cancer Center, Nagoya, Japan; Nishigunma National Hospital, Shibukawa, Japan; Osaka Prefectural Medical Center, Habikino, Japan; Minami-Okayama Medical Center, Okayama, Japan; Ibaragi-Higashi Hospital, Ibaragi, Japan; Kinki- Chuo Chest Medical Center, Sakai, Japan
| | - Y. Nishimura
- National Cancer Center Hospital East, Kashiwa, Japan; Aichi Cancer Center, Nagoya, Japan; Nishigunma National Hospital, Shibukawa, Japan; Osaka Prefectural Medical Center, Habikino, Japan; Minami-Okayama Medical Center, Okayama, Japan; Ibaragi-Higashi Hospital, Ibaragi, Japan; Kinki- Chuo Chest Medical Center, Sakai, Japan
| | - M. Kawahara
- National Cancer Center Hospital East, Kashiwa, Japan; Aichi Cancer Center, Nagoya, Japan; Nishigunma National Hospital, Shibukawa, Japan; Osaka Prefectural Medical Center, Habikino, Japan; Minami-Okayama Medical Center, Okayama, Japan; Ibaragi-Higashi Hospital, Ibaragi, Japan; Kinki- Chuo Chest Medical Center, Sakai, Japan
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Sugimoto N, Tada A, Yamazaki T, Tanamoto K. Antimicrobial Activity and Constituents in Rumput Roman Extract as a Natural Food Preservative. J Food Hyg Soc Jpn 2007; 48:106-11. [PMID: 17892004 DOI: 10.3358/shokueishi.48.106] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Rumput roman extract is used as a natural food preservative. Its antimicrobial activity and constituents were investigated as part of an ongoing study to evaluate its quality and safety as a food additive. The constituents were analyzed by GC/MS, and 5 major constituents were isolated and identified as capillin, capillene, caryophyllene oxide, alpha-curcumene and methyleugenol using NMR analysis. The antimicrobial activities against E. coli, S. cerevisiae and A. niger were measured by means of the halo test. Based on the results, we confirmed that capillin was the major active constituent. The concentrations of capillin and capillene were determined to 17.9 mg/mL and 36.1 mg/mL, respectively, from standard curves of authentic compounds on HPLC.
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Affiliation(s)
- Naoki Sugimoto
- National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
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Maruyama T, Sugimoto N, Kuroyanagi M, Kim IH, Kamakura H, Kawasaki T, Fujita M, Shimada H, Yamamoto Y, Tada A, Yamazaki T, Goda Y. Authentication and Chemical Study of Isodonis Herba and Isodonis Extracts. Chem Pharm Bull (Tokyo) 2007; 55:1626-30. [DOI: 10.1248/cpb.55.1626] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Takuro Maruyama
- Division of Pharmacognosy, Phytochemistry and Narcotics, National Institute of Health Sciences
| | - Naoki Sugimoto
- Division of Food additives, National Institute of Health Sciences
| | | | - Ik Hwi Kim
- Division of Pharmacognosy, Phytochemistry and Narcotics, National Institute of Health Sciences
| | - Hiroyuki Kamakura
- Division of Pharmacognosy, Phytochemistry and Narcotics, National Institute of Health Sciences
| | | | | | | | | | - Atsuko Tada
- Division of Food additives, National Institute of Health Sciences
| | - Takeshi Yamazaki
- Division of Food additives, National Institute of Health Sciences
| | - Yukihiro Goda
- Division of Pharmacognosy, Phytochemistry and Narcotics, National Institute of Health Sciences
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Tada A, Senpuku H, Motozawa Y, Yoshihara A, Hanada N, Tanzawa H. Association between commensal bacteria and opportunistic pathogens in the dental plaque of elderly individuals. Clin Microbiol Infect 2006; 12:776-81. [PMID: 16842573 DOI: 10.1111/j.1469-0691.2006.01497.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Opportunistic infections in the oral cavity of the elderly may increase the incidence of systemic disease. The objective of this study was to investigate the differences in the oral bacterial flora between dependent elderly (inpatients) and independent elderly (community-dwelling residents). After multiple variables were taken into account, inpatients had significantly lower detection rates than community-dwelling residents for alpha-streptococci (p < 0.001) and Neisseria (p 0.004), and higher detection rates for Pseudomonas aeruginosa (p 0.024), methicillin-resistant Staphylococcus aureus (MRSA) (p 0.011) and Actinomyces spp. (p 0.005). Among inpatients, the requirement for a high degree of care was related negatively to detection of alpha-streptococci, but was related significantly to detection of P. aeruginosa (p 0.018) or MRSA (p 0.004). Tube-fed inpatients had a significantly lower detection rate for alpha-streptococci (p 0.041) and a higher detection rate for P. aeruginosa (p 0.004) than those who did not require tube feeding. Inpatients with a history of antibiotic use had a significantly lower detection rate for alpha-streptococci (p 0.049) and a higher detection rate for MRSA (p 0.007) than those without a history of antibiotic use. The detection rates for P. aeruginosa or MRSA in inpatients without alpha-streptococci were higher than in inpatients with alpha-streptococci after controlling for age and gender (P. aeruginosa, p 0.006; MRSA, p 0.001). Overall, detection of alpha-streptococci had an inverse correlation with the detection of P. aeruginosa and MRSA in the oral cavity and is likely to be an indicator of pathogenic bacterial infection.
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Affiliation(s)
- A Tada
- Chiba City Health Center, Chiba, Japan
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Sugimoto N, Kuroyanagi M, Kato T, Sato K, Tada A, Yamazaki T, Tanamoto K. Identification of the main constituents in sandarac resin, a natural gum base. Shokuhin Eiseigaku Zasshi 2006; 47:76-9. [PMID: 16729668 DOI: 10.3358/shokueishi.47.76] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Sandarac resin, a natural gum base, is described as "a substance composed mainly of sandaracopimaric acid obtained from the secretion of sandarac trees" in the List of Existing Food Additives in Japan. To evaluate its quality as a food additive, the main constituents in a sandarac resin product were investigated. Three constituents were isolated and identified as sandaracopimaric acid, sandaracopimarinol and 4-epidehydroabietic acid by MS and 2D-NMR. Quantification of the main constituent, sandaracopimaric acid, was performed by HPLC and its content in the product was determined to be 11.6%.
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Senpuku H, Tada A, Uehara S, Kariyama R, Kumon H. Post-operative infection by pathogenic micro-organisms in the oral cavity of patients with prostatic carcinoma. J Int Med Res 2006; 34:95-102. [PMID: 16604829 DOI: 10.1177/147323000603400112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The aim of this study was to analyse the change in the oral cavity microflora of 14 patients who had undergone a radical prostatectomy for prostatic carcinoma. The detection of micro-organisms in the oral cavity was compared before and after the surgical procedure. Post-operative infection, defined as those patients who had increased Candida species counts and/or pathogenic bacteria only at the post-operative examination, was observed in 10 patients. Six patients showed increased Candida species counts at the post-operative examination compared with the pre-operative examination. In five patients, pathogenic bacterial species were detected at the post-operative examination but not at the pre-operative examination. One patient had detectable pathogenic bacterial species only at the post-operative examination along with increased Candida species counts. Our findings suggest that pre-operative oral hygiene to remove bacterial and Candida species from patients who are scheduled for surgical procedures is important for satisfactory clinical outcomes.
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Affiliation(s)
- H Senpuku
- Department of Bacteriology, National Institute of Infectious Diseases, Tokyo, Japan.
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Ito Y, Kanamaru A, Tada A. Effects of methylophiopogonanone B on melanosome transfer and dendrite retraction. J Dermatol Sci 2006; 42:68-70. [PMID: 16472989 DOI: 10.1016/j.jdermsci.2005.12.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2005] [Revised: 12/15/2005] [Accepted: 12/26/2005] [Indexed: 11/16/2022]
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45
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Jin ZL, Tada A, Sugimoto N, Sato K, Masuda A, Yamagata K, Yamazaki T, Tanamoto K. Analysis of Constituents in Urushi Wax, a Natural Food Additive. J Food Hyg Soc Jpn 2006; 47:167-72. [PMID: 16984037 DOI: 10.3358/shokueishi.47.167] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Urushi wax is a natural gum base used as a food additive. In order to evaluate the quality of urushi wax as a food additive and to obtain information useful for setting official standards, we investigated the constituents and their concentrations in urushi wax, using the same sample as scheduled for toxicity testing. After methanolysis of urushi wax, the composition of fatty acids was analyzed by GC/MS. The results indicated that the main fatty acids were palmitic acid, oleic acid and stearic acid. LC/MS analysis of urushi wax provided molecular-related ions of the main constituents. The main constituents were identified as triglycerides, namely glyceryl tripalmitate (30.7%), glyceryl dipalmitate monooleate (21.2%), glyceryl dioleate monopalmitate (2.1%), glyceryl monooleate monopalmitate monostearate (2.6%), glyceryl dipalmitate monostearate (5.6%), glyceryl distearate monopalmitate (1.4%). Glyceryl dipalmitate monooleate isomers differing in the binding sites of each constituent fatty acid could be separately determined by LC/MS/MS.
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Affiliation(s)
- Zhe-Long Jin
- National Institute of Health Sciences: 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
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46
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Sakaki H, Nakanishi T, Tada A, Miki W, Komemushi S. Activation of torularhodin production by Rhodotorula glutinis using weak white light irradiation. J Biosci Bioeng 2005; 92:294-7. [PMID: 16233099 DOI: 10.1263/jbb.92.294] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2001] [Accepted: 06/06/2001] [Indexed: 11/17/2022]
Abstract
The effects of the irradiation of weak white light on the growth of the red yeast Rhodotorula glutinis and its production of carotenoids were investigated. The ability of beta-carotene and torularhodin, which are final products of carotenoid biosynthesis in R. glutinis, to quench singlet oxygen has also been investigated. Weak white light irradiation that has no effect on the growth of Saccharomyces cerevisiae inhibited the growth of R. glutinis. Simultaneously, the production of torularhodin by R. glutinis markedly increased. In a mutant of R. glutinis, which exhibited increased production of torularhodin, an increase in torularhodin production was shown as a result of light irradiation during the logarithmic growth phase. An experiment using 3-(1,4-epidioxyl-4-methyl-1,4-dehydro-1-naphtyl) propionic acid clarified that torularhodin inhibited 2,5-diphenyl-3,4-benzofran decomposition by singlet oxygen quenching more strongly than did beta-carotene. This result is consistent with the report that carotenoids having a longer polyene chain may exhibit a more potent ability to quench singlet oxygen. These results suggest that the biosynthesis of carotenoids in R. glutinis may play an important role in protecting against oxidative damage caused by light irradiation, and in particular, torularhodin which has a potent singlet oxygen quenching ability may be important. We suggest that acquisition of the ability to produce torularhodin may be an important property for this yeast to promote its wider distribution in the natural world.
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Affiliation(s)
- H Sakaki
- Department of Agricultural Chemistry, Faculty of Agriculture, Kinki University, 3327-204 Nakamachi, Nara 631-8505, Japan.
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47
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Tada A, Jin ZL, Sugimoto N, Sato K, Yamazaki T, Tanamoto K. Analysis of the Constituents in Jojoba Wax Used as a Food Additive by LC/MS/MS. J Food Hyg Soc Jpn 2005; 46:198-204. [PMID: 16305174 DOI: 10.3358/shokueishi.46.198] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Jojoba wax is a natural gum base used as a food additive in Japan, and is obtained from jojoba oil with a characteristically high melting point. Although the constituents of jojoba oil have been reported, the quality of jojoba wax used as a food additive has not yet been clarified. In order to evaluate its quality as a food additive and to obtain basic information useful for setting official standards, we investigated the constituents and their concentrations in jojoba wax. LC/MS analysis of the jojoba wax showed six peaks with [M+H]+ ions in the range from m/z 533.6 to 673.7 at intervals of m/z 28. After isolation of the components of the four main peaks by preparative LC/MS, the fatty acid and long chain alcohol moieties of the wax esters were analyzed by methanolysis and hydrolysis, followed by GC/MS. The results indicated that the main constituents in jojoba wax were various kinds of wax esters, namely eicosenyl octadecenoate (C20:1-C18:1) (1), eicosenyl eicosenoate (C20:1-C20:1) (II), docosenyl eicosenoate (C22:1-C20:1) (III), eicosenyl docosenoate (C20:1-C22:1) (IV) and tetracosenyl eiosenoate (C24:1-C20:1) (V). To confirm and quantify the wax esters in jojoba wax directly, LC/MS/MS analysis was performed. The product ions corresponding to the fatty acid moieties of the wax esters were observed, and by using the product ions derived from the protonated molecular ions of wax esters the fatty acid moieties were identified by MRM analysis. The concentrations of the wax esters I, II and III, in jojoba wax were 5.5, 21.4 and 37.8%, respectively. In summary, we clarified the main constituents of jojoba wax and quantified the molecular species of the wax esters without hydrolysis by monitoring their product ions, using a LC/MS/MS system.
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Affiliation(s)
- Atsuko Tada
- National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
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Kozuki T, Kamei H, Tada A, Harita S, Matsuo K, Tabata M, Kiura K, Ueoka H, Hiraki S, Tanimoto M. The impact of drug administration sequence in a triplet chemotherapy comprising cisplatin, docetaxel and gemcitabine in patients with advanced non-small cell lung cancer: A phase II study of the Okayama Lung Cancer Study Group (OLCSG). J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.7249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- T. Kozuki
- Okayama University Medical School, Okayama, Japan; Okayama Lung Cancer Study Group, Okayama, Japan
| | - H. Kamei
- Okayama University Medical School, Okayama, Japan; Okayama Lung Cancer Study Group, Okayama, Japan
| | - A. Tada
- Okayama University Medical School, Okayama, Japan; Okayama Lung Cancer Study Group, Okayama, Japan
| | - S. Harita
- Okayama University Medical School, Okayama, Japan; Okayama Lung Cancer Study Group, Okayama, Japan
| | - K. Matsuo
- Okayama University Medical School, Okayama, Japan; Okayama Lung Cancer Study Group, Okayama, Japan
| | - M. Tabata
- Okayama University Medical School, Okayama, Japan; Okayama Lung Cancer Study Group, Okayama, Japan
| | - K. Kiura
- Okayama University Medical School, Okayama, Japan; Okayama Lung Cancer Study Group, Okayama, Japan
| | - H. Ueoka
- Okayama University Medical School, Okayama, Japan; Okayama Lung Cancer Study Group, Okayama, Japan
| | - S. Hiraki
- Okayama University Medical School, Okayama, Japan; Okayama Lung Cancer Study Group, Okayama, Japan
| | - M. Tanimoto
- Okayama University Medical School, Okayama, Japan; Okayama Lung Cancer Study Group, Okayama, Japan
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Saeki Y, Kanamaru A, Matsumoto K, Tada A. PP-01 The inhibitory effects of centaureidin on the outgrowth of dendrites, melanosome transfer and melanogenesis in normal human melanocyte. ACTA ACUST UNITED AC 2003. [DOI: 10.1034/j.1600-0749.2003.8306466.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ukita T, Moriyama A, Tada A, Shimura J, Inoue H, Kakemura T, Maetani I, Igarashi Y, Sakai Y, Nakamura M. Successful management of postoperative pancreatic fistula by application of constructed S-type pancreatic stent after operation for abnormal biliary-pancreatic junction. Endoscopy 2003; 35:253. [PMID: 12584651 DOI: 10.1055/s-2003-37260] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- T Ukita
- Third Department of Internal Medicine, Toho University School of Medicine, Meguro-ku, Ohashi 2-17-6, Tokyo 153-8515, Japan.
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